Determination of texture coefficients in hexagonal polycrystalline aggregates with orthorhombic symmetry using ultrasonic waves propagating on one to three principal planes

AbstractVariations of the mechanical properties of red blood cells that occur during their life span have long been an intriguing task for investigations. The research presented is based on noninvasive monitoring of red blood cells of different ages performed by scanning acoustic microscopy with magnitude and phase contrast. The characteristic signature of fixed cells from groups of three different ages fractionated according to mass density is obtained from the acoustic microscope images, with the data represented in polar graphs. The analysis of these data enables the determination of averaged values for the velocities of ultrasound propagating in the cells from the different groups ranging from (1,681 ± 16) m s−1in the youngest to (1,986 ± 20) m s−1in the oldest group. The determined bulk modulus varies with age from (3.04 ± 0.05) GPa to (4.34 ± 0.08) GPa. An approach to determine for an age-mixed population of red blood cells, collected from a healthy person, the age of the individual cells and the age dependence of the cell parameters including density, velocity, and attenuation of longitudinal polarized ultrasonic waves traveling in the cells is demonstrated.

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Determination of the thermal expansion coefficient of a lithium single crystal by using ultrasonic waves

Physics Letters ◽

10.1016/0031-9163(65)90378-1 ◽

1965 ◽

Vol 16 (1) ◽

pp. 17-18 ◽

Cited By ~ 4

Author(s):

E. Mäntysalo

Keyword(s):

Thermal Expansion ◽

Single Crystal ◽

Thermal Expansion Coefficient ◽

Expansion Coefficient ◽

Ultrasonic Waves

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An optodynamic determination of the depth of laser-drilled holes by the simultaneous detection of ultrasonic waves in the air and in the workpiece

Ultrasonics ◽

10.1016/s0041-624x(02)00211-1 ◽

2002 ◽

Vol 40 (1-8) ◽

pp. 791-795 ◽

Cited By ~ 19

Author(s):

Simon Strgar ◽

Janez Možina

Keyword(s):

Simultaneous Detection ◽

Ultrasonic Waves

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Ultrasonic attenuation in lead

Proceedings of the Royal Society of London Series A - Mathematical and Physical Sciences ◽

10.1098/rspa.1963.0006 ◽

1963 ◽

Vol 271 (1344) ◽

pp. 88-104 ◽

Cited By ~ 10

Keyword(s):

Magnetic Field ◽

Ultrasonic Attenuation ◽

Absolute Magnitude ◽

Transverse Magnetic ◽

Ultrasonic Waves ◽

Acoustic Oscillations ◽

Connected Surface ◽

Sample Orientation ◽

Longitudinal Ultrasonic Waves

The absorption of longitudinal ultrasonic waves has been studied as a function of transverse magnetic field in pure single crystals of lead at 1.2 °K. The results were found to be generally consistent with the Fermi surface of lead suggested by Gold. In particular a detailed study of the magneto-acoustic oscillations, as a function of sample orientation and field direction, allowed the determination of some of the dimensions of the hole surface in the second Brillouin zone and revealed a number of new electronic orbits on the multiply-connected surface in the third zone. The absolute magnitude of the attenuation and its dependence on propagation direction and on magnetic field was studied and the results interpreted in terms of the general theory of ultrasonic absorption.

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Determination of the parameters of a linear-viscoelastic thin layer using the normally-incident ultrasonic waves

Chinese Physics B ◽

10.1088/1674-1056/19/7/074301 ◽

2010 ◽

Vol 19 (7) ◽

pp. 074301

Author(s):

Yao Gui-Jin ◽

Lü Wei-Guo ◽

Song Ruo-Long ◽

Cui Zhi-Wen ◽

Zhang Xiang-Lin ◽

...

Keyword(s):

Thin Layer ◽

Ultrasonic Waves ◽

Linear Viscoelastic

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Attenuation and Velocity of Ultrasonic Waves in Amorphous Selenium in the Vicinity of the Glass Transition

Zeitschrift für Naturforschung A ◽

10.1515/zna-1977-0906 ◽

1977 ◽

Vol 32 (9) ◽

pp. 946-951

Author(s):

Erwin Kittinger

Keyword(s):

Glass Transition ◽

Transition Temperature ◽

Glass Transition Temperature ◽

Ultrasonic Waves ◽

Amorphous Selenium ◽

Approximate Determination ◽

Stabilization Process ◽

Nonequilibrium States ◽

Longitudinal Ultrasonic Waves

AbstractAttenuation and velocity of longitudinal ultrasonic waves have been measured in a-Se in the vicinity of the glass transition. Both quantities are shown to be affected significantly by the stabilization process below the glass transition temperature Tg. Equilibrium values of sound velocity are also reported for the range 25 °C to 45 °C. The decrease (increase) of attenuation (velocity) during stabilization is reversed at higher temperatures. The connection of both quantities is discussed in terms of an effective temperature which allows the approximate determination of equilibrium values of attenuation (and possibly of other structure related properties) from measurements performed in nonequilibrium states.

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